Textile spindle brake device



July 16, 1957 A. R. ANDREWS TEXTILE SPINDLE BRAKE DEVICE Filed Nov. l,1956 NVENTOR.

ALLEN RAYMOND ANDREWS 7 l 6 TTRNEYS iinited gratos;

man on@ 2,799,132 Patented. July 16, 1957 2,799,132 TEXTILE SPINDLEBRAKE DEWGE Application November 1, 1956, Serial No. 619,725,

- Claims. (Cl. .S7- 38) This invention relates generally to textilespinning or twisting apparatus and more particularly to an proved formof brake device for braking application to a spindle in apparatus ofthis sort. v

Briefly described, the improved spindle brakey device of the presentinvention isV characterized by a brake lever arranged to rest infulcrumed relation at the spi die base so as to carry a friction. shoeadjacent one end thereof for braking application at a rotational surfaceofy the spindle, the brake lever having a handle portion at its otherend on which a leaf spring is mounted to extend in abutment with thespindle base in a manner serving to bias the brake lever to a normalposition, maintaining the friction shoe thereon inactive, and furtherserving to retain the fsullcrummed brake lever resting on the spiridlebase, while at4 the same time allowing' it to be rocked for brakingapplication of the friction shoe, and also permitting removal of thebrake lever readily from the spindle base simply by lifting it therefromwhenever desired.

These and other features of the present invention are described infurther detail below in connection with the accompanyingV drawings, in`which:

Fig. l is a vertical sectionA detail showing a brake device embodyingthe present invention arranged on a textile spindle;

Fig. 2 is a side elevation of the brake device and spin,- dle as seenfrom the right in Fig. 1 and Fig- 3 is a vertical section detail.correspond-.ing gen,- erall-y to Fig. l but showing a modifiedarrangement of the brake device.

In Figsl and 2 the. spindle. brake embodiment of the present inventionshown therein is indicated generally by the reference numeral and thespindle on which it is arranged by the reference numeral 12. The spindle12 comprises a spindle blade 14 tted from its upper end with a fillersleeve section 1.6 for receiving a bobbin or other yarn carrier thereon.A whorl 1,8 is also fixed to the spindle blade 14 above a fixed base 20in which the spindle blade 14 is rotatably carried. The illustratedspindle base is of the form disclosed in copending applications SerialNo. 447,977, filed August 5, 1954, now Patent No. 2,781,629, and SerialNo. 493,274, led March 9, 1955, now Patent No. 2,781,628, in whichcomplementary housing halves are assembled lengthwise about the lowerspindle blade portion to form a composite base therefor, reference beingmade to the above noted copending applications for further details ofthis spindle base arrangement which forms no part of the presentinvention. The exterior surface of the spindle base 20 is threaded toengage a clamping collar 22 by which the spindle 10 may be secured on aspindle rail 24 in the usual manner.

The spindle base 20 is further arranged according to the presentinvention with bracket means 26 at the portion thereof overlying thespindle rail 24 and disposed just below the spindle whorl 1S. Thebracket means 26 arranged on the spindle base 20 preferably comprises apai-r of spaced bracket arms which extend upwardly above the lower endof the whorl 18 and are spaced outwardly thereofA with vertical slots 23opening upwardlyl at the upper bracketl arm ends. In addition, adownwardly facing horizontal shoulder 30. is formed on the spindley baseZtl adjacent the lower end of they bracket means 26,. When the spindlebase 20. has a composite form as disclosedI in the above notedVcopending applications, oney of the parirk of bracket arms forming thebracket means 26 may be formed on each of the complementary halvesforming, the spindle base 20, and the horizontal shoulder 30 mayllikewise have components thereof formed on each complementary spindlebase half so as to extend between the lower ends of the bracket armsforming the bracket means 26 when the spindle base 2th is assembled.

The spindle brake 10 provided according to thepresent inventioncomprises a brake. lever 32 fitted with a fulcrum pin 3.4 by which it isarranged to rest in the vertical slots 28 in fulcrumed relation at theupper end of the bracket means 26A.. lOne end of this fulcrumed brakelever 32 is formed to carry a friction shoe 356 disposed for brakingapplicationat a rotational surface of the spindle 12, such4 as a flange1,8. at the lower end of whOrl 1 8. The other end ofthe brake lever 32formed as -a handle portion 384 dependingv from the braelget means 2 6.:with a. loaf spring 4.0 mounted thereon, to. ox,- tend upward-1y andinwardly in abutment with die sido of ille spindle base 20 below thehorizontal shoulder 30 thereon; i f

The leaf spring 40 is arranged in this manner so that it biases thebrake lever 32 to a normal position at which the handle portion 38thereof is rocked outwardly to canse the friction shoe 36 to bearlaterally ata top surface of the spindle base 2). in inactive relationwith respect to. the whorl ange 18', but disposed for brakingapplication thereto upon inward rocking of the handle portion 3.8. Bythis arrangement, the spindle brake 16 is normally retained on thespindle base 2,( ),i n1 an inactive position ai which il is always readyfor goil-teologi vbraking vapplication to the spindle 12 wheneyerneeded, and at which it is always readily removable from the spindle 12,whenever desired, simply by manual retraction of the, leaf spring 40toward the handle portion 38 sufficiently to clear the horizontalspindle base shoulder 3,0, whereupon the spindle brake may be simplylifted fl'rQm the Vertical slots 28 in the spindle base bracket means.2.6, Itwill also be noted that the spindle brake 10 may be just asreadily replaced on the spindle baseA 20,

The modified embodiment of tho present invention shown in. Fig- 3 of thedrawingsy comprises d. spindle brake indicated gener-ally by tlioreference numeral 15,0. arranged or a teil-.fil spindle 52 Comprising.g. spindle olado 54. and a whorl 56 xed thereon above a spindle base 58,which in this case is illustrated as being of conventional tubular form;the spindle base 58 being externally threaded to carry a clamping collar60 for securing on a spindle rail (not shown) as noted in connectionwith the previously described embodiment.

In the presently described embodiment, the spindle base 58 is likewiseformed with bracket means 62 which may comprise spaced bracket armshaving upwardly opening vertical slots 64 at the upper ends thereof anda downwardly facing horizontal shoul-der 66 extending between the lowerends thereof on the base SS. The spindle brake 50 again comprises abrake lever 69 fitted with a fulcrum pin 70 at which it rests infulcrumed relation in the vertical slot 64 on the "bracket means 62 withone end thereof carrying a friction shoe 72 disposed for brakingapplication at a lower end whorl flange 56. Also, the other end of thebrake lever 68 is again arranged to form a handle portion 74 dependingfrom the 3 bracket means 62 with a leaf spring 76 mounted thereon toextend upwardly and inwardly in abutment with the spindle base S8 belowthe horizontal shoulder 66.

In this case, however, the leaf spring 76 is arranged to bias the brakelever 68 normally to a more or less balanced hanging position at whichthe friction shoe 72 rides inactively at or adjacent the whorl ange 56',so as to be applied thereto immediately for braking the spindle 50 uponapplication of inward rocking pressure at the handle portion 74 of brakelever 68 and thereby provide a more rapid braking reaction than ispossible with the spindle brake arrangement of the first describedembodiment. Also, it should be noted that in the presently describedembodiment the balanced hanging disposition of the brake lever 68 allowsthe leaf spring 76 to be arranged with its extending end seated againstthe spindle base 53 directly at the downward face of the horizontalshoulder 66 to provide for retaining the spindle brake 50 on the spindlebase 58 with somewhat greater stability, while allowing it to be removedand replaced thereon just as readily as the previously describedembodiment.

The present invention has been described in detail above for purposes ofillustration only and is not intended to be limited by this descriptionr otherwise except as dened in the appended claims.

I claim:

l. A textile spindle brake device for braking application to a spindleat a rotational surface thereof adjacent a fixed base in which saidspindle is rotatably carried, said device comprising fulcrum bracketmeans on said base, a horizontal shoulder on said base adjacent saidbracket means, a brake lever removably resting in fulcrumed relation onsaid bracket means, a friction shoe carried at one end of said brakelever above said base for braking application at said rotational spindlesurface, the other end of said brake lever forming a handle portion anddepending from said bracket means with a leaf spring mounted thereon toextend upwardly and inwardly in abutment with said base below saidshoulder, said leaf spring serving to bias said brake lever to a normalposition maintaining said friction shoe inactive -and further serving toretain said brake lever resting on said bracket means while allowingsaid brake lever `to be rocked on said bracket means for brakingapplication of said friction shoe and remaining retractable to clearsaid shoulder and thereby permit removal of said brake lever readilyfrom said base simply by lifting it therefrom.

2. A textile spindle brake device for braking application at a whorlflange on a spindle blade rotatably carried in a fixed base, said devicecomprising a pair of spaced bracket arms on said base extending upwardlyabove the level of said whorl ange and spaced outwardly thereof, saidbracket arms having vertical slots opening upwardly at the upper endportions thereof and having a horizontal shoulder extending on said basebetween the lower ends thereof, and a brake lever fulcrumed on saidbracket arms at said upper end slots, said brake lever being fitted witha friction shoe disposed for braking application to said whorl ange andhaving a handle portion depending from said bracket arms with a leafspring mounted thereon and extending upwardly and inwardly therefrom tobear against said base below said horizontal shoulder, said leaf springbiasing said brake lever for normally maintaining the friction shoethereon inactive and serving by abutment with said base below saidshoulder to retain said brake lever on said bracket larms while allowingmanipulation of said brake lever to apply said friction shoe at saidwhorl flange and remaining retractable to clear said shoulder andthereby permit removal of said brake lever readily from said base simplyby lifting it therefrom.

3. A textile spindle brake device comprising, in combination with aspindle blade, a xed base rotatably carrying said spindle blade, and awhorl secured on said spindle blade and formed with an exterior flangedisposed adjacent said base, a pair of spaced bracket arms on said base,a downwardly facing horizontal shoulder on said base adjacent saidbracket arms, a brake lever removably resting on said bracket arms infulcrumed relation, a fri-ction shoe carried at one end of said brakelever above said base for braking application at said whorl flange, theother end of said brake lever forming a handle portion and dependingfrom said bracket means with a leaf spring mounted thereon to extendupwardly and inwardly in abutment with said base below said shoulder,said leaf spring serving to bias said brake lever to a normal positionmaintaining said friction shoe inactive and further serving to retainsaid brake lever resting on said bracket means while allowing said brakelever to be rocked on said bracket means for braking application of saidfriction shoe and remaining retractable to clear said shoulder andthereby permit removal of said brake lever readily from said base simplyby lifting it therefrom.

4. A textile spindle brake device as defined in claim 3 and furthercharacterized in that said leaf spring is arranged to bias said brakelever to a normal position at which the handle portion thereof is rockedoutwardly to cause said friction shoe to bear laterally at a top surfaceof said base in inactive relation with respect to said whorl flange butdisposed for braking application thereto upon inward rocking of saidhandle portion.

5. A textile spindle brake device as defined in claim 3 and furthercharacterized in that said leaf spring is arranged to bias said brakelever to a normal position at which the friction shoe thereon ridesinactively at said whorl flange but may be applied thereto for brakingsaid spindle by inward rocking of said handle portion.

References Cited in the tile of this patent FORElGN PATENTS

